Polaris Sportsman XP 1000 rjwc exhaust November 11, 2015 I just put the single exhaust on. It seems to spit and sputter and backfire a little bit when I’m driving at slow speeds. Anyone eles have this issue? Lastly do you guys think a fuel programer will fix that? Thanks! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related